Improvement in sewing-machines



2 Shets-Sheet 1Q J- LIFOLLETT. Swing-Machine.

No. 203,905. Patented May 21,1878.

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N. PETERS, FHOTO-LITHOGRAPHER, WASHINGTON, Dv C W 2 S heets sheet, 2:.J. L. POLLETT. SeWingFMaQhin e.

No. 203,905. ted May 21, 18758.

JOSEPH L. FOLLETT,

UNITED STATES PATIENT OFFICE.

OF NEW YORK, N. Y.

IMPROVEMENT IN sEwme-MAoHms.

Specificationformingpart of Letters Patent N 0. 203,905, dated May 21,1878 application filed I March 8, 1878. 1

To all whom it may concern Be it known that I, J OSEPH L. FOLLETT, ofthe city, county, and State of New York, have invented certain new anduseful Improvements in Sewing-Machines, of which the following is aspecification:

My present invention has reference to means for operating thestitch-forn1ing devices of sewingmachines, particularly the hook orother under device-that is to say, a device below the cl0th-p1atewhichco-operates with the needle. In another application for Letters Patent,now pending, I have shown and described the combination of a needle baror holder, with cording, banding, or its equivalent, which receives apositive reciprocatory movement from some moving part of the machine,and transmits the same to the needle bar or holder. I now propose tooperate in the same way the shuttle, hook, or equivalent device; and, byequivalent, I here intend any reciprocating or oscillating under devicewhich co-operates with the needle to make the stitch.

The nature of my present improvement, and the manner in which the sameis or may be carried into effect will be understood byreferencetotheaccompanyingdrawing,inwhich- Figure l is a side elevationof a mechanism embodying in one form my improvement, only so much of thesewing-machine being represented as needed for the purpose ofexplanation. Fig. 2 is a side elevation of a modified arrangement ofmechanism. Figs. 3 and 4 are views of detached parts, hereinafterreferred to.

In Fig. l, A represents the cloth-plate of a sewing-machine, and B thegoose-neck. G is the upper rotary shaft, which communicates movement tothe reciprocatory needle-bar (not shown) in any ordinary or suitablemanner, as

will be understood without further explanation. The shaft receivesrotary movement from the prime mover by means of belting, which passesover the grooved fly or hand Wheel a on said shaft. The shaft is alsoprovided with a double crank, 12, to the respective arms of which areconnected the two ends of the cording or banding c, which are attachedto sleeves or thimbles d, mounted loosely on the crank-pins. The cordingpasses down under the cloth-plate, under the loose or idle pulleys e f,and. thence around the loose pul-' ley g, and is attached to theshuttle-carrier h, which is arranged to slide back and forth insuit-able guides in the usual way.

'When the upper shaft is revolved a positive movement of reciprocationwill be imparted to a the cording, and, through the cording, will betransmitted to the shuttle-carrier, to which said cording is attached.

In Fig. 2 Ihave shown an arrangement in which both the needle and theshuttle or its equivalent are operated by means of banding, deriving itsreciprocatory movement from one crank-shaft. In this arrangement,Aindicates the cloth-plate, and B the-goose-neck, of a sewin g-machine.O is the intermediate crank-sh aft, operated, by a suitable prime mover,through the intermediary of belting passing around its grooved hand orfly wheel a. On the crank is mounted loosely a thimble or sleeve, h, to

which are attached the two ends of the cording or banding, as shown. Thearrangement of the cording or banding ,is as follows: Starting from thetop of sleeve 71., it passes up over a loose pulley, i; thence over aloose pulley on axis j, in rear of the loose pulley m on the same axis;thence down under a loose pulley, K, and thence to the reciprocatingneedle-bar, to which it is attached firmly; thence up over pulley m, andbackward to loose pulley n,- thence. downward below the cloth plate, andaround a loose pulley, 0 thence around the axis or shaft on which thehook s is mounted. The cord is made fast to said shaft, and thence isled backward around a loose pulley, p, and upward to the under part ofthe sleeve h, to which it is secured.

The cording takes several turns around the axis or shaft of the hook, asshown in Fig. 3, where 1 represents said shaft, this being for thepurpose of giving a proper rotation in each direction, amounting to afull revolution, or little more than one revolutionof the hook. The cordis secured to the shaft at its central or middle turn or coil.

In Fig. 4 is represented a front elevation of the crank-shaft. v

When the shaft is put in revolution it will be seen that a reciprocatorymovement will be imparted to the cording, which movement will, by thecording, be transmitted to both hook and needle.

I wish it understood that I do not hereclaim combining the needle-barwith cording, banding, or its equivalent having reciprocatory movement,for I have made that the subject of a separate application for LettersPatent, hereinbefore referred to.

In Fig. 2 I have represented a hook. It is manifest, however, that anyother loop-takin g or stitch-forming device acting in conjunction withthe needle, and having areciprocatory or oscillatory movement, may beemployed. The same may be said of the shuttle shown in Fig. 1.

I may use any suitable instrumentality for banding or flexibleconnection-for instance, Eire cord, leather, cat-gut, chain, steel band,e G.

The adjustment of the parts is very simple, and is easily effected.

The guide-pulleys over which the cording or banding passes may be madeadjustable, to take up slack; or they may be mounted on movablebearings, pressed by springs, so as to tend continuously to tighten andkeep under tension the banding.

Having described my improvements, I state, in conclusion, that I do notrestrict myself to the details herein shown and described inillustration of my invention; but- What Iclaim, and desireto secure byLetters Patent, is-' 1. In a sewing-machine, the combination,

with the shuttle or equivalent device which co-operates with the needleto form the stitch, of cording, banding, or its equivalent, connectedwith, and receiving a positive backand-forth movement from, a rotarydouble crank or eccentric on the one hand, and on the other handconnected with, and imparting a positive backand-forth movement to, saidshuttle or its equivalent, as set forth.

2. In a sewing-machine, the combination, substantially as set forth, ofa needle bar or holder and the shuttle or its equivalent, with cording,banding, or its equivalent connected with, and receiving positivereciprocatory movement from, some moving part of the ma-'

